Vista not finding any sound card...

Ok, after a whole 2 days of googling this problem, I cant seem to find a
solution...

Vista cant seem to find my sound card. Simple, you'd think? Not really. I am
running a laptop, so physically removing/reinstalling the card wouldnt work
in this case.

I have both a vista beta driver and the xp drivers installed for my sound
card.

I just cant seem to find the device at all in my list, and every other
device has been located and accounted for.

What can I do??